Susanoo¹ (須佐能乎)
Ninjutsu, Kekkei Genkai, No rank, Offensive, Defensive, All ranges
User: Uchiha Itachi
Protecting the user, destroying the enemy!
[picture of Itachi's Mangekyou Sharingan]
→↓As the strongest doujutsu, only they can reach it who have taken the "Mangekyou Sharingan," feared by those around it, to its extremes. A godly state. Its the user's guardian deity, but at the same time, it consumes the user's life.
[picture of Itachi surrounded by Susanoo]
Dwelling in the eyes that grasp the truth of Heaven and Earth is a valorous sword-wielding, shield-bearing fierce god!!
The two doujutsu that only those who have activated the "Mangekyou Sharingan" are permitted to use~~ "Amaterasu²," denoting the "light of the material world" and "Tsukuyomi³," symbolising the "darkness of the spiritual world"~~ Only those who have activated the "Mangekyou Sharingan" -the heavenly eyes that see without obstruction the truth of all of creation- are permitted to use these two doujutsu. Dwelling only in those who have grasped both of these technique is the power of a tempestuous god... that is "Susanoo". The materialised chakra takes on the form of a war god with a commanding face and powerful physique. His fierce soul will not calm down until he has destroyed all enemies before his eyes...!!
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There is a reason "Susanoo" boasts absolute perfection in both offence and defence~~ That reason is the "Sacred Treasures*" he holds in both hands. In his right hand is the "Totsuka Sword"** that will strike down any kind of enemy and the shield in his left hand is the "Yata Mirror"*** that will reflect all attacks. Whether they be material or spiritual, ninjutsu or physical attacks, they all lose their meaning before this god's potency.
[picture of the gourd as the Totsuka Sword appears from it]
↑Sake flows from the gourd, taking on the shape of a sword and transforming into the "Totsuka Sword"! The souls absorbed by the sword are also sealed in there.
In his left and right hands are the unparalleled Sacred Treasures of miraculous efficacy
The Totsuka Sword
[picture of Orochimaru being sealed into the Totsuka Sword]
←It's a type of "Kusanagi Sword*," equipped with the power to throw the person it stabs into a genjutsu world of drunken dreams, sealing them for all eternity. The sword itself carries a "fuuinjutsu".
The Yata Mirror
[picture of Susanoo holding up the Yata Mirror]
→The incorporeal shield of the "Sacred Treasures". Endowed with all "nature transformations," it can change its own characteristics depending on the characteristics of the attack it receives, making the technique ineffective.
¹ The name of this technique comes from Susanoo-no-mikoto (須佐能乎命), the Japanese god of the sea and storms. He is the brother of the sun goddess Amaterasu-oomikami² and the moon goddess Tsukuyomi-no-mikoto³. According to legend, he defeated the giant eight-headed, eight-tailed snake Yamata-no-Orochi (八岐大蛇, "Eight-Branched Giant Snake") with his sword the Totsuka-no-Tsurugi** after getting the snake drunk on sake. While cutting up one of the snake's tails, he broke his sword on the Kusanagi-no-Tsurugi* hidden within. He took the sword and gave as a present to his sister Amaterasu-oomikami. The Kusanagi would later be passed down to Emperor Jinmu (神武天皇, Jinmu-Tennou) the first emperor of Japan and become one of the Three Sacred Treasures*
The fight between Itachi and Orochimaru obviously parallels this legend. Itachi defeated Orochimaru with Susanoo and the Totsuka Sword, which is kept in a sake bottle, while Orochimaru used the Yamata Technique and has the Kusanagi inside of him.
The kanji of this name could be translated as "he with the ability to help by all means".
² Amaterasu (天照). The Japanese goddess of the sun, Amaterasu-oomikami (天照大神), is a sister of Susanoo-no-mikoto¹ and Tsukuyomi-no-mikoto³. Her name can be translated as "she who illuminates Heaven".
³ Tsukuyomi (月読). The Japanese goddess of the moon, Tsukuyomi-no-mikoto (月読命), is a sister of Susanoo-no-mikoto¹ and Amaterasu-oomikami². Her name can be translated as "she who reads the Moon".
* The Japanese crown jewels are called the Three Sacred Treasures (三種の神器, Sanshu no Jingi). They consist of the Kusanagi-no-Tsurugi (草薙剣, "Grass-Cutting Sword"), the Yata-no-Kagami***, and the Yasakani-no-Magatama (八尺瓊勾玉, "Eight Shaku Red Magatama" [a shaku is a unit of length, about 30cm long. A magatama is a jewel roughly shaped like a comma or tomoe]).
** The Totsuka-no-Tsurugi (十挙剣, "Sword of Ten Actions". With other kanji often translated as "Ten-Hand Sword," referring to its length) is a legendary sword like the Kusanagi, only less famous. It used to belong to the Japanese creator deity Izanagi-no-mikoto (伊弉諾尊), but eventually came into the hands of Susanoo-no-mikoto, who broke it while slaying the Yamata-no-Orochi as you can read in the first note.
*** The Yata-no-Kagami (八咫鏡, "Eight-Span Mirror") is one of the Three Sacred Treasures*. After Susanoo-no-mikoto greatly infuriated Amaterasu-oomikami by doing such pleasant things as throwing excrement into her shrines and palace and killing her handmaidens, Amaterasu-oomikami hid herself in the cave Ame-no-Iwato (天岩戸, "Heavenly Rock Entrance"), covering the world in darkness. She was lured out again when the other gods gathered outside the cave and started cheering at the erotic dance of Ame-no-Uzume-no-mikoto (天宇受売命, the goddess of the dawn and revelry). Once outside, she saw her face in the Yata-no-Kagami that was hung there. Fascinated by her appearance (narcissistic much? apparently she called out the words "omo shiroi," [面白い] meaning "white face". A phrase now meaning "interesting," "amusing"), the other gods managed to close the cave behind her, forever bringing back the sun.